Thomas Schaub Noonan (January 20, 1938 – June 15, 2001) was an American historian, Slavicist and anthropologist who specialized in early Russian history and Eurasian nomad cultures.
Educated at Indiana University, Noonan was, for many years, a Professor of History at the University of Minnesota. He was the author of dozens of books and articles and one of the leading authorities on the development of the Kievan Rus and the Khazar Khaganate. Noonan placed a great deal of importance on numismatics in understanding economic and social trends. He was the mentor of numerous scholars and leading historians. In 2001 many of his colleagues honored him by publishing the first of a multivolume collection of articles under the title "Festschrift in Honor of Thomas S. Noonan," which was edited by Roman K. Kovalev and Heidi M. Sherman. The second volume appeared in 2005.
Noonan died of cancer in 2001.